import com.sun.org.apache.xalan.internal.xsltc.dom.KeyIndex; //导入依赖的package包/类
/**
 * Returns the index for a given key (or id).
 * The index implements our internal iterator interface
 */
public KeyIndex getKeyIndex(String name) {
    // Return an empty key index iterator if none are defined
    if (_keyIndexes == null) {
        return (_emptyKeyIndex != null)
            ? _emptyKeyIndex
            : (_emptyKeyIndex = new KeyIndex(1));
    }

    // Look up the requested key index
    final KeyIndex index = (KeyIndex)_keyIndexes.get(name);

    // Return an empty key index iterator if the requested index not found
    if (index == null) {
        return (_emptyKeyIndex != null)
            ? _emptyKeyIndex
            : (_emptyKeyIndex = new KeyIndex(1));
    }

    return(index);
}
 

import com.sun.org.apache.xalan.internal.xsltc.dom.KeyIndex; //导入依赖的package包/类
/**
 * Returns the index for a given key (or id).
 * The index implements our internal iterator interface
 * @param name the name of the index (the key or ##id)
 * @return a KeyIndex.
 */
public KeyIndex getKeyIndex(String name) {
    // Return an empty key index iterator if none are defined
    if (_keyIndexes == null) {
        return (_emptyKeyIndex != null)
            ? _emptyKeyIndex
            : (_emptyKeyIndex = new KeyIndex(1));
    }

    // Look up the requested key index
    final KeyIndex index = _keyIndexes.get(name);

    // Return an empty key index iterator if the requested index not found
    if (index == null) {
        return (_emptyKeyIndex != null)
            ? _emptyKeyIndex
            : (_emptyKeyIndex = new KeyIndex(1));
    }

    return(index);
}
 

import com.sun.org.apache.xalan.internal.xsltc.dom.KeyIndex; //导入依赖的package包/类
/**
 * Adds a value to a key/id index
 *   @param name is the name of the index (the key or ##id)
 *   @param node is the node handle of the node to insert
 *   @param value is the value that will look up the node in the given index
 */
public void buildKeyIndex(String name, int node, Object value) {
    if (_keyIndexes == null) _keyIndexes = new Hashtable();

    KeyIndex index = (KeyIndex)_keyIndexes.get(name);
    if (index == null) {
        _keyIndexes.put(name, index = new KeyIndex(_indexSize));
    }
    index.add(value, node, _currentRootForKeys);
}
 

import com.sun.org.apache.xalan.internal.xsltc.dom.KeyIndex; //导入依赖的package包/类
/**
 * Return KeyIndex for the buildKeyIndex methods. Note the difference from the
 * public getKeyIndex method, this method creates a new Map if keyIndexes does
 * not exist.
 *
 * @param name the name of the index (the key or ##id)
 * @return a KeyIndex.
 */
private KeyIndex buildKeyIndexHelper(String name) {
    if (_keyIndexes == null) _keyIndexes = new HashMap<>();

    KeyIndex index = _keyIndexes.get(name);
    if (index == null) {
        _keyIndexes.put(name, index = new KeyIndex(_indexSize));
    }
    return index;
}
 

import com.sun.org.apache.xalan.internal.xsltc.dom.KeyIndex; //导入依赖的package包/类
/**
 * Creates a KeyIndex object of the desired size - don't want to resize!!!
 */
public KeyIndex createKeyIndex() {
    return(new KeyIndex(_indexSize));
}
 

import com.sun.org.apache.xalan.internal.xsltc.dom.KeyIndex; //导入依赖的package包/类
/**
 * Adds a value to a key/id index
 *   @param name is the name of the index (the key or ##id)
 *   @param node is the node handle of the node to insert
 *   @param value is the value that will look up the node in the given index
 */
public void buildKeyIndex(String name, int node, String value) {
    KeyIndex index = buildKeyIndexHelper(name);
    index.add(value, node, _currentRootForKeys);
}